Ray treatment for surfaces



Nov. 25, 1941. J. BARBER 2,263,866

RAY TREATMENT FOR SURFACES Filed March 7, 1940 2 Sheets-Sheet l gig 5511-,

Jrvuwniom Nov. 25, 1941. I. J. BARBER 2,263,866

RAY TREATMENT FOR SURFACES Filed March '7, 1940 2 Sheets-Sheet 2 Patented Nov. 25, 1941 UNITED STATES PATENT OFFICE RAY TREATMENT FOR SURFACES In .1. Barber, Fostorla, om, asllg'nor a, m

Foatorla Pressed Steel Ohio, a corporation of Application March I, 1940, Serial No. 322,740

*3 Claims. 219-35) This invention relates to means for' adjusting ray projecting apparatus for use in ray treatment of objects, which apparatus may be of the conveyor type.

Referring to the drawings:

Fig. 1 is an end elevation, with parts broken away, of an oven tunnel or passage showing ranges of adaptation of the invention herein;

Fig. 2 is a section on the line II-II, Fig. 1, showing a gang of the reflectors as to their assembly on a conduit and the conduit-carrying arms;

Fig. 3 is a section on the line IIIIII, Fig. 2, showing an adjustable mounting for the conduit relatively to the arm;

Fig. 4 is a sectional view through the reflectorand its carrying jack as flxed to an adjustable arm of a different type than that of Fig. 3 as to its mounting with the conduit;

Fig. 5 is a view on the line V--V, Fig. 4, showing the arm and its connection to the conduit;

Fig. 6 is a conduit mounting on an arm in which the tubular member as assembled with the conduit has clamp assembly with the arm;

Fig. 7 is a view on the line VII-VII, Fig. 6, showing this clamp mounting;

Fig. 8 is a section on the line VIII-VIII, Fig. 4, showing the portion of the conduit and assembly of the jacks therewith;

Fig. 9 is a diagrammatic view showing the development of the reflector of Fig. 4;

Fig. 10 is a view looking into gangs of the reflectors, with the reflectors staggered in the ganging up thereof, and diagrammatic as to a focal range therefor;

Fig. 11 shows diagrammatically the overlapping and distribution of rays from adjacent prodependently upon floor 6, their spacing as to the track I may be straight or tapered clearance as to the car or work carrier as may be desirable. Therefore, instead of lower track I there may be upper, or even non-straight track 8 for rollers III of carrier I I, which may have hook I: for engaging work I3. These articles of work may be propelled along the tracks 6 or I at a desired rate Corporation, Fostorla,

hio

or by pushing the work through with succeeding work in progressive manufacturing operations. The rate of travel or extent to which the frames are set up with the gangs of conduits may be according to the desired condition sought, even straight, slant, helical or varied.

These frames have in the various angle iron portions 2, 6, openings ll which may be engaged by bolt l6 (Fig. 2) with nut It to locate sleeve portion II in a swivel telescopic mounting as to the frame 2. This sleeve portion is split ring and has wing nut clamp II as a friction or grip holder for adjusting the length of the arm IQ of tubular form. This arm I9 is shown as having flxed therewith arc terminus 20 with slot 2| for the are past the mounting portion of the arc with the arm I9, for at this portion there is clearance 22 (Fig. 3) for bolt 26 effective by wing nut 25 for clamping conduit having base pan portion 26 and body portion 21. This conduit has its assembly efiected terminally by these bolts 24 and wing nuts 25. Additionally, intermediate these terminal mounting portions, the conduit 26, 21 (Fig. 8) has openings 26 in diagonal pairs to receive bolts 29 (Fig. 4) in anchoring jack or U-shaped bracket 30. This U-shaped bracket 36 has upright leg portions as away from the conduit providing opposing parallel ways ii. The free termini of this U-shaped jack has screws 62 anchoring this jack in flxed assembly with reflector 33. This reflector 33 has open front 34 and axially thereof entrance port 65 for stem 36 of bulb 31 having infra-red ray emanating fllament 36. This bulb stem 36 is mounted in flxture 39 carried by bridge or slide readily clamped by bolts 4| extending through the slots II in the parallel legs of the jack 30.

This adjustment may take care of pear or spheric type of bulb 31 for the desired location of the filament or ray emanation source accu- ,rately in the projector or reflector II. This clamp tion. Electric current leads 46 (Fig. 4) from the fixture 39 may be through opening 46 of the jack (Fig. 11).

registering with opening 41 of the conduit, to be there connected with the electric current supply line, say having flexible conduitleads 43 (Fig. 1) thereto.

This reflector 33, as herein shown, is desirably of contour 49 (Fig. 9) which is intermediate spheric contour 50 and parabolic contour This is eflicient in my control functioning for the bulb energy source in instances when the bulb 31 may be between 3 and 5 inches in diameter, and the opening or reflector 34 in a range of inches in diameter. With this location, an emcient position for the work may be approximately 9 to 10 inches from the opening 34 of the reflector. At such region, the rays from the filament 38 as direct and as reflected have a region of greater ray intensity 52 (Fig. 10) say approximately 6V2 to 7 inches in diameter. These regions of greater intensity approximate a region of intensity 53 of B. t. u. uniformity As these regions of uniformity are spaced from. each other, there is in practice hereunder a course or line of progress for the work to traverse therebetween. However, from these regions of intensity 53, there is a spread or less active region 54. These regions 54 as in line reflectors of the gang overlap and build up toward uniformity between 'the'regions 53. How ever, supplementing these regions are the rays from the adjacent gang, and when the adjacent gang is in staggered relation (Fig. 10) this uniformity for ray treatment, as far as 18", approximates a constant intensitythroughout the path of movement for the work.

The arms l9 allow for a range of adjustment beyond that of the reflector as to the bulb or ray source. However, between the ray source and the reflector this adjustment for the slide 40 as to the Jack 30 may be not merely for adaptation to the different types of bulbs but may be such as to permit a departure from the focal point. Thus by slight shifting of the bulb 31 into the port 35, there is a spread of greater divergence for the rays as emanating, while contrary direction of shifting or moving of the bulb outward further into the reflector 33 means a greater concentration. Accordingly, at this diverging set-up there may be a lessening of the ray intensity which may be desirable on classes of work, say where ignition problems or burning might be undesirable, as with certain plastics or with certain stock which might be undesirably discolored by too great a heat treatment or ray action. This ray action is even effective for the drying of objects in manufacture,

even wire or coating thereon or washing therefrom. It may be used for fabrics; or foodstuffs, or the cooking or baking thereof, and in the coating or drying of materials.

The ranges of adjustment of the reflector as to the energy source or bulb are thus adaptable to a wide range of commercial requirements. This range is further extended in the placement for the reflectors as to the gangs thereof. This may be in staggered or parallel relation (Fig. 10), tapered, or in parallel and vertical relation. Furthermore, the grouping may be for the embracing region or tunnel as provided on opposite sides of the tracks for the carrier by regions approximately straight 55 (Fig. 1') concentrated region 56. are region 51, or even variations therefrom. To this end, the adjustable arms IS with the adjustable mountings for the conduit boxes 26, 21, are the factor. Supplemental thereto, in lieu of the reflector 33 there maybe reflector 53 (Fig. 1) being specially adaptable for large diameter bulb 59, say up to 5 inches. This reflector 58 in this set-up has adjacent its port 30 a spheric socket region 6!, a larger-radius zone portion 62,.with a forwardly extended zone portion 63. This in practice say for a 10 inch reflector has worked out for region 84 of uniform density approximately 4 to 5 inches from reflector front opening 65.

The arm l9 (Figs. 4, 5) is herein shown as having terminal eye 66 for bolt 61 having lock washer 68 and nut 69 as a swivel clamp for L-bracket 10 to be engaged by bolt H for mounting the conduit 26, 21. There is thus a rockable mounting readily clamped for determining the angle of direction for this conduit and its jack as thereon of wider range than that for the slotted are 20.

The arm I9 may terminate in eye 12 (Figs. 6, 7) having clamping bolt 13 for tubular section 14 protruding from one side thereof and carrying bracket or U-shaped portions 15 with opening 16 therebetween to receive bolt 11 through the conduit 26, 21, and thereby have its nut 13 engage the bracket portion 15 in anchoring the conduit therewith. In this set-up, loosening of the clamping bolt 13 will permit rocking of the tubular section 14 as to the arm 19 for the desired angular placing of the conduit.

In practice hereunder, the purpose primarily has to do with eificient ray reflection and control especially in that portion away from the more luminous and into the infra-red region. Accordingly, these reflectors with the openings 34, 65, have the walls inwardly therefrom efficiently reflective for such infra-red region. A gold or gold alloy or gold leaf has been found a very helpful factor to the ends of the treatment herein disclosed.

It is convenient to establish, according to the character of electric current supply, definite lengths for these conduit sections 26, 21, as ganged. Close connection may warrant, instead of terminal inlet 19, for such conduit inlet in rear or back portion 26 (Fig. 1). This would mean that even were the parts aligned instead of slanting, tapering, or giving a twist or helical turn, there maybe abutting proximity.

The degree of treatment, even with the spacing similar, may be different when the body at such treated region be different; say in its thickness or absorption qualities for the rays, even to the character of coating or treatment thereon or therefor. The speed for operation may permit initial intensity to be maintained, initial intensity to be graded oil, or a mild initial intensity to be built up. Staggering, twisting, helical or slant setting for the conduit gangs may be employed to avoid localized heating and streaking. The variance of this spacing as permittedby the telescopic .arms is a factor which may be employed in reaching a desired degree of refinement in the operation of the apparatus disclosed.

What is claimed and it is desired to secure 2. Ray treating equipment including a bulb having a stem, 9. reflector having an open front, and rearwardly therefrom an axial port to embrace the stem of the bulb, a mounting fixed with the reflector, a slide coacting with the mounting, and a fixture assembled with the slide to provide a seat for the stem with the bulb, said slide being adjustable as to the mounting for range of adaptation to bulbs of difl'erent stems, said refiector in axial cross section conforming to a curve approximately midway between curves defined by symmetrical semi-spherical and paraboloidal reflectors of the same diameter and depth.

3. Ray treating equipment including a bulb having a stem, a reflector having an open front. and rearwardiy therefrom an axial port to embrace the stem of the bulb, a mounting fixed with the reflector, a slide coacting with the mounting, and a fixture assembled with the slide to provide a seat for the stem with the bulb, said slide being adjustable as to the mounting for range of adaptation to bulbs of difl'erent stems, said mounting having frictional means for holding the same in adjusted position, said reflector in axial cross section conforming to a curve approximately midway between curves defined by symmetrical semi-spherical and paraboloidal reflectors of the same diameter and depth.

IRA J. BARBER. 

